IT Infrastructure Technical Lead

At neXa, we’re not just building digital solutions — we’re helping businesses grow smarter. We work with forward-thinking clients across industries to design, build, and implement technology that makes a real difference. From intelligent automation to custom applications, our projects are as diverse as our team.B2B contract | Hybrid work in Warsaw – 4 days per week from the office | Full-timeFor one of our clients, we are looking for an experienced IT Infrastructure Technical Lead to take technical ownership of a mature enterprise infrastructure and shape its future architecture, standards, and roadmap. This is a hands-on technical leadership role without formal people management, combining infrastructure architecture, operations, security, and mentoring. You will also play a key role in strengthening cybersecurity and regulatory readiness while modernizing and standardizing complex ICT and OT environments.Scroll down to see the full job description, including responsibilities and requirements:Responsibilities:Take technical ownership of the IT infrastructure architecture, standards, technology decisions, and development roadmapDesign, develop, migrate, and optimize virtualization environments based on VMware and Hyper-VMaintain and evolve highly available infrastructure and Disaster Recovery architecture across multiple locationsDesign and maintain clustering, replication, backup, and tested disaster recovery solutionsManage and improve enterprise networking and security solutions, including FortiGate, VLANs, segmentation, routing, SD-WAN, and VPNDrive the modernization and standardization of multiple ICT and OT network environments, including inventory, segmentation, monitoring, and securityContribute to cybersecurity and regulatory readiness initiatives, including NIS2/KSC-related risk management, vulnerability management, hardening, monitoring, incident response, and documentationDevelop and maintain storage environments based on SAN/NAS technologiesAutomate recurring infrastructure operations and deployments using PowerShell, REST APIs, and Infrastructure as Code practicesMaintain and improve monitoring and logging solutions across the infrastructure environmentProvide technical leadership to the infrastructure team through mentoring, configuration reviews, knowledge sharing, and common technical standardsSupport the most complex infrastructure incidents as part of the third-line support functionLead infrastructure implementations end-to-end, from architecture and technology selection through deployment and transition into operationsCollaborate with technology vendors, external partners, and internal business stakeholdersMust-have requirements:Minimum 5 years of senior-level experience in IT infrastructure, including proven architectural or solution design responsibilitiesExpert-level knowledge of Windows Server and Active Directory, including GPO, DNS, DHCP, PKI/ADCS, and related enterprise servicesExpert-level hands-on experience with virtualization, particularly VMware vSphere / ESXi / vCenter and/or Hyper-VStrong experience designing and maintaining High Availability and Disaster Recovery solutions, including clustering, replication, and tested recovery proceduresStrong practical knowledge of enterprise networking and firewalls, including FortiGate, VLANs, network segmentation, routing, SD-WAN, and IPsec VPNHands-on experience with enterprise backup solutions, particularly Veeam Backup & ReplicationPractical knowledge of SAN/NAS storage, including iSCSI, multipathing, LUNs, datastores, and capacity planningStrong cybersecurity awareness and practical experience with system hardening, vulnerability management, access management, and incident responseExperience designing and implementing infrastructure solutions end-to-end rather than working exclusively in operational or support rolesHands-on technical mindset with the ability to independently troubleshoot complex infrastructure issuesAbility to act as a technical authority, make architectural decisions, establish standards, and mentor other engineersGood English skills enabling effective work with technical documentation, vendors, and international stakeholdersNice to have:Experience with OT environments, building automation systems, BMS, or securing and segmenting technical infrastructure networksPractical knowledge of NIS2, KSC, or ISO 27001, including implementation, audits, procedures, or compliance initiativesExperience with Infrastructure as Code tools such as Ansible, Terraform, or DSCExperience with Microsoft Azure in hybrid infrastructure scenarios, including IaaS and integration between cloud and on-premise environmentsHands-on experience with Microsoft 365, Entra ID, Intune, Exchange Online, or TeamsExperience with monitoring and security tools such as Zabbix, Wazuh, or FortiAnalyzerExperience with PowerShell, REST APIs, and infrastructure automationExperience with Microsoft RDS environments, including Session Hosts, RemoteApp, RD Gateway, or FSLogixExperience administering SQL ServerExperience with endpoint management technologies such as Autopilot, Intune, ManageEngine, PXE, WinPE, or Intel vProExperience in environments combining corporate IT with physical or technical infrastructureRelevant certifications such as VMware VCP, Fortinet FCP/NSE, Veeam VMCE, or Microsoft infrastructure/Azure certifications